Casing for incandescent-electric-lamp sockets.



I 0. 0. SOHOENECK. CASING FOR INCANDESCENT ELECTRIC LAMP SOCKETS.

APPLICATION FILED JAN. 11, 1911.

Patented May 7, 1912:

NTOR

WITNESSES.-

A TTORNEYS.

descent electric lamp sockets;

connan c. scnonnncn, or sxnacus'n, NI'W tonic.

casme iron moAnnnscnnnnnnc'rmc-mur scum.

To all whom it me concern.

fieit known tat I, CONRAD O. Senor.- nnon, of Syracus,-in the county of Onondaga and State of New York, have invented a new and .usefuhCasing for Incandescent- Electric-Lamp' Sockets, lowing is a specification.

This invention has for its object the production of a simply-constructed and ec0- nomically-manufactured casing for incanand it consists in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanying drawing in which like characters. designate corresponding arts in all the views.

Figure 1 is an unassembled view of this casin for incandescent electric lamp sockets, t e cap member and contiguous parts being shown in section. Fig. 2 is a transverse sectional view of said casing, the members thereof beg assembled. ig. 3 is an inner face view of the cap member. Fig. 4 is a plan view of the shell member; Fig. 5 is a fragmentary viewof the shell and cap member when interlocked. Fig. 6 is a view similar to Fig. 5 illustrating the members prior to'being interlocked. Figs. 7 and 8 are fragmentary views of modified forms of my casing.

This casing for incandescent electric lamp sockets, comprises a shell member 1 and a cap member 2 having interlocking means which are brought into and out of interlocking engagement by successive axial and artial rotary movements of the members. The interlocking means comprises internal shoulders 3 formed on one of the members here shown as the cap member 2, the shoulders 3 being located in arcs of less radii than the normal radius of the cap, or of less radii than the radii of the portions of the cap intervening between the shoulders 3; and such interlocking means further includes peripheral shoulders on the other of such members, as theshcll member 1, the shoulders i being located in arcs of greater radii than the radii of the inner edges of.

the shoulders 3, or of greater radii than the portions of the shell member intervening etween said shoulders 4.

As here shown the shoulders 3 are formed by pressing inwardly portions of the marin of the cap member 2, these portions bemg spaced at intervals substantially equi- Specification of we" 2min. a lication manual- 11, 1911. Serial u 602,00li.

of which the fol-- 'pression or'perforation 6 formed PatentedMayli', 1912.

distant apart, wlth bearing faces below the shou ders and engagln the outer face of the shell member 1; and he shoulders 4 are in the form of tongues struck from the margin of the shell member 1, such tongues being of substantlally the same width as the distance between any two of the shoulders 3 and 4 are held in interlocking engagement by a sun catch device comshoulders 3. Thesaid portions bein formed prising a complementa projection 5 and de y I93 tively in the ca member and shell mem r the pro]ect1on ing here shown as pre 1nwa'rdly from one of the shoulders 3, and

the depression or perforation being shown as formed 1n the shell member below one of the shoulders 4 and near the slot? in the shell for the key of the socket, or near any other yielding portion of the shell member. In Fig. 7, is shown a modified form of the shoulders on the shell member, such shoul rs 8 beingshown as formed by pressing on wardly portions of the mar in of the shell member 1 in a manner simi ar to the formation of the shoulders 3 of the cap member shown in Fig. 3.

In Fl 8, I have shown another modified form of my invention in which the interlocking shoulders 9, 10 of the cap and shell members are formed byturning inwardly tongues formed on the margin of the cap member, and turning outwardly tongues formed on the margin of the shell member. The cap member is also formed with an internal abutment 11 near its upper end 01)- posed to the internal shoulders 3 of the cap member, and the upper edge of the shell member shoulders against said abutment when the shoulders 3, t are interlocked.

In operation the cup membey' is' secured to the supporting fixture by means [of the ordinary screw threaded coupling 12, and the socket wired to the conductors leading in through the coupling, and the shell memher which is around the socket is moved axially carrying the shoulders t between the shoulders 3 of the cap member until the lower edges of the shoulders 4 clear the upper edges of the shoulders 3' and then the shell member is given a partial rotation about its axis until the snap catch device operates. To detach the shell member from the cap member, the portion of the shell member near the slot 7 is pressed inwardly to uncatch the snap catch device, the shell Q- l. r 1,026,928

- vmember is rotated in the reverse direction the-fiortions between said shoulders, and the ntil the shoulders 3, 4 are unlocked and cap member being formed with bearing faces then the shell member is moved axiall'y below saidshoulders for engaging the shell What I claim is: member and the shell member being formed i5 1. In a-easing for incandescent electric with external ShOIiIdersarranged in arcs 3 sockets, a shell member, and a mp member, of greater radii than the radii oft-the inner one of said membersbeifig 'formed;with i'nedges of' the first-mentioned' shduhieis .ami

j ternal shoulders spacedepartcircumferen-Mbemg adapted to inteilock the firsttially' and located in arcs of less radii than mentioned shoulders, I a'ndithe {cap member lo the radii-of the portions betweenl'said sholil- ",be1ng formed with aninterhel {Abutment 11 fl ;fermed;with external shoulders arranged in E fi a .20 ij i drfor thqpvrimseidescribd" V "sockets, a shell memberend a cap member ders,' -ankl the memberformed with theintr-y near its upper ehil andthe'fz'shell member 1ml whouldere being formed .with shouldering againstyseid abutment Whenfthe faces below said shoulders ffor-fengtging the r sho'ulders ofthe {membersare}interlocked,

other member and such other member being substantially as ana "1 g the-purpose speci- 7 e I i e rcslofgreatefradii gthanthei'radii pfthe; In testimon inner edgesfof theffirs't-mentioned shoulders signed 13am gntl f.bei ng; adapted to. interlock with w ztness flfil-sbmentloned .ShOU lders, substantially of -Onondega,

yre'cuse, in the connty e ,v r i he State of New York,

th W day Pt? We 0- t 5 t V -'eONBADCJSCHOENEGK;- thee'ep member being formedviifth internal I Witnesses;

1,. shoulders spaced apart cireu'mferentially and. S, DAVIS,"

, 2-1111 wkcasingforlinoandeseent lfijilocate in'ercs of less radii than e19 radii ofi 26 B. em 

